How To Register A Business Name

You have settled on a name for the thing you are about to build. Maybe it is a sole trade, maybe a small partnership, maybe a side project you run through a company you already own. The next question is the one that trips most people up: do you actually need to register that business name, and if so, how? This guide walks you through the rules, the forms, the fees, and the timing, so you can get it done correctly the first time and get back to the work that matters.

At Kinore we set up new businesses across Ireland every week, from first-time sole traders to established limited companies adding a fresh brand. The mechanics are not complicated once you understand who has to register and what the registration does and does not give you. Let us start there.

What does registering a business name in Ireland actually mean?

A business name is simply the name you trade under when it is different from your own true name. If Aoife Byrne sets up as a sole trader and operates as “Aoife Byrne”, she has nothing to register. The moment she trades as “Riverside Bakery”, that trading name has to be registered. The same logic applies to partnerships and to limited companies that operate under anything other than their full registered title.

The registration is governed by the Registration of Business Names Act 1963, and it is handled by the Companies Registration Office. The CRO maintains the central register of business names alongside the register of companies, and it is the body you file with whether you are an individual, a partnership, or a company.

It helps to be precise about what registration does. It records your chosen name on a public register and produces a certificate you can show to a bank, a landlord, or a supplier. It does not give you exclusive ownership of that name, and it does not give you any trademark protection. We come back to that distinction later, because it catches a lot of new owners off guard.

Who needs to register a business name in Ireland?

The rule is built around your true name. If you trade under it, you are fine. If you trade under something else, you must register. Three groups are caught by the Act:

• Sole traders who use any name other than their own surname. “John Murphy” needs no registration; “Murphy Plumbing Services” does.
• Partnerships that do not trade under the true names of all the partners. If even one partner is left off the trading name, the business name must be registered.
• Limited companies that trade under a name different from their full registered company name. A company called Hartley Holdings Limited that runs a shop as “Hartley’s” has to register “Hartley’s” as a business name.

This applies to any individual, partnership, or body corporate with a place of business in the Republic of Ireland whose trading name is not their true name. It is worth knowing that limited companies can hold several business names at once, which is common where one company runs multiple brands. Each separate trading name is a separate registration.

Business name versus company name: the difference that matters

This is the single most common point of confusion, so it is worth slowing down. Registering a business name and registering a company are two entirely different things, and one is not a substitute for the other.

Registering a company means incorporation. You form a separate legal entity, the company becomes a person in the eyes of the law, and you receive a certificate of incorporation. The company name itself sits on the register of companies, and the rules around it are stricter, including the similarity provisions under section 30 of the Companies Act 2014 that let the Registrar direct a company to change a name that is too like an existing one.

Registering a business name does none of that. It creates no separate legal entity and gives you no limited liability. It simply records that a particular person, partnership, or company is trading under a particular name. A sole trader registering “Riverside Bakery” is still personally liable for the business; the registration just makes the trading name official and visible on the register of business names.

How to check if a business name is available in Ireland

Before you commit to a name, do some homework. The CRO lets you search the register of companies and the register of business names free of charge through its online search facility, so you can see whether a similar name is already in use. It is a sensible first step, although you should understand its limits.

Here is the important catch: the CRO does not check your proposed business name against existing names before it registers it. Two businesses can end up on the register with names that are very close, and the office will not stop that happening. So the responsibility to investigate the possibility of others having rights in the name sits with you.

That is why the official guidance is blunt about it. Applicants are advised to check that their proposed business name does not conflict with a company name or trade mark, because any person claiming to have a right to that name could take an infringement action or a passing off action to defend their interest. Two practical checks cover most of the risk:

• Search the CRO register of companies and business names for anything too alike.
• Search the trade mark register at the Intellectual Property Office of Ireland to see whether the name, or something close to it, is already a registered trade mark.

While you are at it, check that the matching domain name and the social handles you want are free. There is little point registering a trading name you cannot use online.

How to register a business name in Ireland step by step

Once you have a chosen name you are comfortable with, the registration itself is straightforward. The CRO accepts applications online through its CORE portal or by post, and the online route is cheaper and faster. Here is the process from start to finish.

• Step 1: Confirm your structure. Decide whether you are registering as a sole trader, a partnership, or a company, because this determines which form you file.
• Step 2: Pick the right form. Use RBN1 if you are an individual, RBN1A for a partnership, and RBN1B if a body corporate is registering the name. More on these below.
• Step 3: Gather your details. You will need the proposed business name, the nature of the business activity, the business address, and the details of the owner or owners.
• Step 4: File and pay. Submit the online form through CORE, or post the paper form, and pay the fee.
• Step 5: Keep your certificate. Once the registration is processed you receive a certificate of registration, which you must keep and display.

One rule you cannot ignore: you must register the business name within one month of starting to trade under it. The Act sets a one-month window, so do not leave it sitting on a to-do list after you have already begun invoicing under the new name.

Which form do you need?

The form follows the applicant type, and getting this right first time saves a rejected submission.

What information do you need to register the business name?

The CRO keeps the information requirements light, but accuracy matters because mismatched details are the most common cause of delays. For a sole trader registering as a sole trader, you provide the proposed business name, your own details, the address from which you trade, and a short description of the business activity. If your chosen name includes words suggesting a regulated activity, expect extra scrutiny.

For a partnership the form asks for every partner’s details together with the partnership’s address. For a company adopting a business name, you supply the company number and registered name alongside the new trading name. The detail differs by structure, but the principle holds throughout: the register is a central repository of public statutory information on Irish companies and business names, so the data you give has to be correct and current.

What are the fees and how long does registration take?

The cost depends on how you file. The CRO charges €20 for an online application submitted through CORE and €40 for a paper application sent by post. Filing online is the obvious choice for most people: it is half the price and it is processed more quickly.

Processing time varies with how busy the office is and whether your application is clean. A well-prepared online form clears in a matter of days; errors, name conflicts, or missing information push that out. Current fees and timelines can change, so it is worth confirming the figure on the CRO business name registration page before you file.

What happens after you register your business name?

When the registration is complete the CRO issues a certificate of registration. This is not just a souvenir. The original certificate must be displayed in a conspicuous position at your principal place of business, and you will often be asked to produce it, for example when opening a business bank account in the trading name.

From there, treat the registered business name as the official version of how you present the business. Put it consistently on your invoices, your website, your signage, and any contracts. If your details change later, such as a new address or a change to the name, you update the registration with the CRO rather than letting the public record drift out of date. And remember that business name registration sits separately from your tax obligations; depending on your structure you will still need to handle registration with Revenue.

Does registering a business name protect it?

This is where expectations and reality part company. Registering a business name does not protect it. The CRO does not protect your name from being used by someone else, it does not check proposed names for similarity, and it gives you no exclusive right to that name. The register is a record, not a shield.

Real protection comes from a registered trade mark, which is a separate process handled by the Intellectual Property Office of Ireland, not the CRO. A trade mark gives you enforceable rights in the name or logo for the goods and services it covers. If your brand is central to your business, registering a name or trade mark with the IPOI is what stops a competitor trading under something confusingly similar. Business name registration and trade mark registration solve two different problems, and serious brands usually do both.

Get your business name registration right from the start

Registering a business name is one of those tasks that is simple when you know the rules and frustrating when you do not. The wrong form, a name that clashes with an existing trade mark, or a missed one-month deadline can turn a quick job into weeks of back-and-forth, often at the exact moment you are trying to launch.

That is where having an experienced team behind you pays off. Kinore is a structured, senior-led accountancy firm, and setting up new businesses correctly, from sole trade to limited company, is everyday work for us. We will confirm the right structure, prepare and submit the registration, and make sure your tax and compliance obligations are lined up alongside it, with a dedicated client manager who knows your file. If you are starting a new business in Ireland and want it done properly the first time, talk to us and we will take it from here.

Frequently asked questions

Do I need to register a business name if I am a sole trader?

Only if you trade under a name that is not your own true surname. If you operate under your own name, no registration is needed. The moment you adopt a separate trading name, such as “Riverside Bakery”, you must register it with the CRO using form RBN1 within one month of starting to use it.

Can I use a trading name without registering it?

No. If the name differs from your true name, the Registration of Business Names Act 1963 requires you to register it. Trading under an unregistered business name is a breach of the Act, and banks and suppliers will usually ask to see your certificate of registration before dealing with you under that name.

Is registering a business name the same as registering a company in Ireland?

No. Registering a company is incorporation, which creates a separate legal entity and gives you a certificate of incorporation and limited liability. Registering a business name only records a trading name on the register; it creates no company and gives no limited liability. They are different processes under different legislation.

How much does it cost to register a business name in Ireland?

The CRO fee is €20 for an online application through the CORE portal and €40 for a paper application by post. Filing online is cheaper and faster, which is why most applicants use it. Confirm the current fee on the CRO website before you file.

Does business name registration protect my name from being used by others?

No. The CRO does not protect your name, check it against existing names, or give you exclusive rights to it. For genuine protection you need a registered trade mark through the Intellectual Property Office of Ireland, which is a separate process from business name registration.

The information provided in this article is for general guidance and informational purposes only. It does not constitute professional accounting, tax, or financial advice, and should not be relied upon as a substitute for advice tailored to your specific circumstances. While we take care to ensure the content is accurate and up to date at the time of publication, legislation, tax rates, thresholds, and compliance requirements in Ireland can change.